Misuse of magic.

[KageTokage]

Pulling someone out of a LB with Rescue is actually a good thing if it's done properly (That is, pulling only after you see that the LB cast has completed), as it cancels out the ridiculously long animation lock and allows the player to start moving and DPSing again immediately, which is more likely to save them then kill them if you're not pulling them into an AoE or something.

If you see someone doing it specifically to cause problems, that's what vote kick is for.